The pair split in July in 2010 after Kelly found out Luke had allegedly cheated on her with Elle Schneider, a transsexual who is awaiting gender reassignment surgery.
Kelly gave Glamour magazine a pretty open interview about the ordeal, with interesting comments including:
"It's hard enough to get your head around someone cheating on you, but when someone is a chick with a d—k?"
"Up until then, I'd always thought that the worst way to get cheated on would be with an ugly girl. Don't you think?"
The 27-year-old also revealed that she was mortified at having to tell her parents, Ozzy and Sharon Osbourne, the news: "Having to tell them my fiance had cheated on me with a tranny who sold his/her story to the press…was so humiliating."